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???
08/30/05 15:03
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Msg Score: +1
 +1 Good Answer/Helpful
#100293 - Have a look at this ...
Responding to: ???'s previous message
Thomas said:
I need to detect the passthrough the zero by a 110/220 Volt AC. How can I detect it with a simple environment. The detection signal should trigger a interupt.

Have a look at this here:
http://www.8052.com/forum/read.phtml?id=98954

Viel Glück,
Kai

List of 15 messages in thread
TopicAuthorDate
Zero Detection            01/01/70 00:00      
   Zero crossing detection            01/01/70 00:00      
      both            01/01/70 00:00      
   Re: Zero Detection            01/01/70 00:00      
   I do not know what for, but Philips has            01/01/70 00:00      
   Have a look at this ...            01/01/70 00:00      
   Opto Coupler            01/01/70 00:00      
   A simple ckt.            01/01/70 00:00      
      good enough for that but ~25% off zero i            01/01/70 00:00      
         This is indeed dangerous!            01/01/70 00:00      
            It is, I think, a Wall Wart. Anyhow the            01/01/70 00:00      
               Ok            01/01/70 00:00      
                  language lesson            01/01/70 00:00      
                     Thanks...            01/01/70 00:00      
            No, no kids playing with the mains.            01/01/70 00:00      

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